On Wed, Jul 28, 2021 at 07:51:58PM +0800, Joakim Zhang wrote: > + The "enet_2x_txclk"(option), for RGMII sampling clock which fixed at 250Mhz. > + The clock is required if SoC RGMII enable clock delay. Hi Joakim So you only need the clock if you are using RGMII delays? For RGMII without delays, the clock is not needed? You might want to add a check in the C code that the clock is provided when needed. Andrew